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Fan abnormal sound detection system

A detection system and fan technology, applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of difficult fan heat reflection, short detection time, detection error, etc., to save labor costs, test stability, The effect of reducing production costs

Active Publication Date: 2016-05-18
P&R MEASUREMENT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The heating of the fan during use should also be included in the detection range, which reflects to a certain extent whether the fan assembly is working abnormally. However, the detection time is generally short, and it is difficult to detect the heating of the fan during the detection reflect
[0006] In addition, in the detection of fan abnormal noise, it is often necessary to connect the sensing component to the fan to be tested, but most of the fans to be tested do not have settings for installing the sensing component, which makes detection difficult; at the same time, it is necessary to connect the fan to be tested with some detection The components are connected, and the stability of different fans is different. If the fan is not placed stably, it will also affect the detection and even cause detection errors.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as figure 1 As shown, the fan abnormal sound detection system includes a sensor module, a signal acquisition module, a data processing system and a fixed bracket. The sensor module includes an acceleration sensor, a sound sensor and a thermoelectric converter. The acceleration sensor is used to identify and transmit The generated acceleration signal, the sound sensor is used to identify and transmit the sound signal of the fan under test, and the thermoelectric converter is used to convert the heat generated by the fan under test into an electrical signal to obtain the thermal energy signal of the fan under test; the signal acquisition module includes The NI9234 data acquisition card for collecting acceleration signals, sound signals and thermal energy signals, and the NIcDAQ-9188XT Ethernet chassis for multi-channel signal measurement. The NI9234 data acquisition card is connected to the acceleration sensor, sound sensor and thermoelectric converter respectively. ...

Embodiment 2

[0052] Such as figure 2 As shown, when the fan abnormal sound detection system of the present invention is used, the following detection steps are included:

[0053] S1. The clamping parts of the two opposite fixed brackets clamp the fan to be tested between the two fixed brackets, and adjust the position of the clamp on the column according to the actual situation;

[0054] S2. Install the sound sensor and the acceleration sensor on the mounting hole outside the clamping part, and set the thermoelectric converter on the fan to be tested;

[0055] S3, turn on the fan to be tested;

[0056] S4. The acceleration sensor recognizes and transmits the acceleration signal generated by the vibration of the fan under test, the sound sensor recognizes and transmits the sound signal of the fan under test, and the thermoelectric converter obtains the heat energy of the fan under test by converting the heat energy generated by the fan under test into an electrical signal Signal;

[005...

Embodiment 3

[0062] Such as image 3 As shown, the thermoelectric converter used in the present invention comprises at least two strip-shaped thermoelectric thick films 1 connected in series through conductive metal sheets 2. The thermoelectric thick film 1 uses 200 mesh antimony telluride powder as thermoelectric conductive particles, and the Base cellulose is used as a binder and terpineol is used as a solvent. The mass ratio of antimony telluride powder to ethyl cellulose ranges from 172:1 to 175:1. Tellurium that has been weighed according to this mass ratio The antimony trioxide powder is dispersed into the terpineol solution of ethyl cellulose to make a slurry. The amount of terpineol should be just enough to dissolve the ethyl cellulose. If it is too small, it will not be enough to dissolve the ethyl cellulose. If it is too much, it will affect the The thickness of the slurry, even the quality of the final film, the amount of terpineol is the empirical value obtained after several t...

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Abstract

The invention discloses a fan abnormal sound detection system and relates to the technical field of fan detection. The fan abnormal sound detection system comprises a sensor module, a signal collection module, a data processing module and a fixed support. The sensor module comprises an acceleration sensor, a sound sensor and a thermoelectric converter. The signal collection module comprises an NI9234 data collection card and an NI cDAQ-9188XT Ethernet cabinet. The NI9234 data collection card is connected with the acceleration sensor and the sound sensor and is further connected with the NI cDAQ-9188XT Ethernet cabinet. The data processing system comprises a data conversion and characteristic extraction module based on Labview and a mathematic modeling analysis system module based on Matlab. The data conversion and characteristic extraction module based on Labview is connected with the NI cDAQ-9188XT Ethernet cabinet and the mathematic modeling analysis system module based on Matlab. According to the invention, signal collection, analysis and judgment are integrated, and the manual misjudgement problems caused by inconsistent boundary judgment are reduced; in addition, the automatic degree is high, manual cost is saved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of fan detection, in particular to a fan abnormal sound detection system. Background technique [0002] From large mechanical equipment to electronic equipment, cooling fans are the guarantee for the normal operation of equipment. With the continuous development of electronic products, the noise problem of cooling fans directly affects people's lives and has received more and more attention. The manufacturer began to pay attention to it and was so strict that no abnormal noise was allowed, so the requirement for abnormal noise detection of fans became very urgent. At present, almost all abnormal noise detection of fans is carried out by training special inspectors to listen to and screen the fans before they go offline, and use this to judge whether the fans are good or bad. And it has been difficult to be replaced by automatic devices for a long time, which consumes a lot of labor costs, and due to repeat...

Claims

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Application Information

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IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 刘力源孙博吴川辉吴祖迥
Owner P&R MEASUREMENT INC
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